50 trim dynoed W/unusual results. Running Pig Rich. . . . .

[spoolinspyder]

here's my problem if anyone can help me out it would be greatly appreciated.

i currently have a to4e 50 trim setup with all the supporting mods needed to run this kind of setup. i have everythinmg from AFPR to VP O2 housing, pocketlogger, greddy evo w/no cat, 1g swap,etc. my question is why am i running extremely rich with 550's on a 50 trim turbo. i fugure that with a turbo of this size, i would need bigger injectors, but thats not the case for me. i have the old style afc which is maxed out to -30 from 3500 to 7200 rpm and im stilling running rich to t he point i'll fall of the dyno A/F ration chart. i recently dynoed my car at dyno works and the results were dissapointing. with this type of setup i should have broken into the mid 300's easily. the guy who tuned my car to its max potential even vouched for me on that. he currently has a galant running consistent 11's and i have a better setup than he does, he said. but here's what my dyno looked like:

RPM HP TQ A/F Ratio
3.0 95 160 13.2
3.5 130 190 13.2
4.0 200 260 11.9
4.5 230 270 11.5
5.0 250 260 11.5
5.5 263 250 11.0
6.0 261 230 10.5
6.5 250 200 10.0
7.0 230 180 off the chart 9.5

my peak horsepower was at 5750 rpm at 266.4 hp
torque peaked at 4250 rpm at 276.3 ft. lbs

this was weaaaaaaaaaaakkkkkkkk. i dynoed running 20lbs of boost as well, but my joe p. couldn't hold the boost well enough because it would spike about 2 lbs. from where i set it. i want to know how come im not maxing out my 550's yet on such a large setup. i was planning on buying another new style afc or just picking up a gm maft. i need to find some way to lean my mixture out other than with my afpr because i still need a pressurized spray to atomize properly. By the way i also have -6 lines from the fuel pump to the fuel rail ( vfaq fuel line mod). I need some help on which route to go before i waste or invest my money into another fuel controller.

 

[Jasper16g]

What is your base fp set at?

I assume that was a wideband that you are getting the a/f from? If so, those don't look rich at all until 6k. 11.0 is pretty good. Do you have a FMIC or stock sidemount? My guess is you are getting no timming at all and lots of knock.

Did you log the run on with your logger?

Jason

 

[spoolinspyder]

i do have have a big spearco frontmount, but i unfortunately forgot to log my runs on the pocketlogger. how come im not maxing out my 550 with this type of setup

 

[spoolinspyder]

what do you think i should purchse to help solve this problem or my setup adequate enough?

 

[spoolinspyder]

oh yeah, my base fp was set at 42 and we dropped 5psi on my last run which actually made 6500 rpm a/f ratio show up on the chart.

 

[Jasper16g]

Yeah, you should probably be pushing the 550's pretty good with that turbo and boost level. Are you sure that the boost was holding steady all the way to the end of the pull?

I personally would suggest the dsmlink. I feel that is one of the best investments I have made so far IMO.

Jason

 

[anconover]

do an intake leak test, and looks for vaccum leaks, and intake leak could very well cuz the car to run rich and crappy to the point where u cant seem to lean it out. Also set the base FP with vac line DISCONNECTED to 37psi (unless ur 2g wich it should be 43psi) and run again and see what happens, def do the intake leak test.

 

[Tallen]

I'm in the same boat as you. I am getting a DSMlink 100%.

 

[spoolinspyder]

I have already checked for boost leaks and my intercooler holds boost like a xhamp. There is on the other hand a small leak coming from an area around/under/by the afpr, but that would be it. I have cel's on as well like the infamous p1400/p1500 as well as a boost control solenoid malfunction cus I disconnected it. What do u guys suggest about getting a maft to solve this? Good choice or a waste of money?

 

[anconover]

something isnt right, its not your tuning so a maft will temp solve it if anything. something else is causing your problem, thats what u need to fix rather than dumping money into uneccessary things.

 

[spoolinspyder]

That I agree, there is something going on with my car that I can't understand. Everything checks our good from compression to leaks. I think it has to do something with either the ecu or some computer controlled BS. I live near RRE so I'm thinking about bringing it to them, but I don't want to pay an arm and a leg for a diagnosis on their butt byno. Does anyone know what would cause this to happen

 

[Violater101]

I feel your pain knowing your car has alot more in it. Like everyone said above and as you obviously know, you should be maxing out those 550's with 20lbs of boost. I was over 100% duty cycle on my green @18psi with 550's with base 43fp with a 255hp no rewire and stock lines. I would also say that you had some sort of boost leak, but you have said you don't have any leaks. Sometimes the simplest things can be a problem unfortunately Good Luck